Vertical power pulling device

Details Vertical power pulling device Vertical power pulling device

1989-03-22

1990-05-15

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Pipe or rod jack

Lifter

E21B 900

Patent

active

049251597

ABSTRACT:
A pulling device for use in withdrawing well points and the like comprises a boom, a column fixedly mounted at an outer end of the boom, apparatus for adjustable positioning of the column over a well point to be withdrawn from the ground and disposing it vertically for pulling without jamming. A gripping carriage is vertically moveable on the column. The carriage carries a first, fixed jaw in alignment with the center plane of the column comprising first and second vertically spaced apart first jaw elements and a second jaw comprising first and second vertically spaced apart second jaw elements. The second jaws are moveable relative to the first jaws so as to grasp the top of the well point to be pulled between them. Hydraulic cylinders power the jaws and raise the carriage so as to pull the gripped point.

REFERENCES:
patent: 1398822 (1921-11-01), Wilson
patent: 4371018 (1983-02-01), Arnold

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